Comparison of transrectal sonography and double-contrast MR imaging when staging rectal cancer.

Objective: The aim of this study was the prospective comparison of the diagnostic yield of transrectal sonography and double-contrast MR imaging for preoperative staging of rectal cancer. SUBJECTS AND METHODS. Thirty-nine rectal cancer patients (20 men, 19 women) underwent transrectal sonography performed with a 10-MHz endoanal probe and MR imaging (1.